Cloth-clamp for textile machinery.



J. J. HOEY.

CLOTH CLAMP FOR TEXTILE MACHINERY.

APPLICATION FILED MAB. 19, 1910.

Patented Au 1, 1911.

2 SHEETS-SHBET 1.

l l I INVENTEIR WITNESSES ATTORNEY COLUMBIA PLANOBRAPH c0 WASHINGTON. D.c.

J. J. HOEY.

CLOTH CLAMP FOR TEXTILE MACHINERY.

APPLICATION FILED MAR. 19, 1910.

999,228, Q Patented Augxl, 1911.

2 SHEETS-SHEET 2.

WITNESSES E INVENTUR wa z/czlzaa/lmu gh/d 166? W k4 //AT:FURNEY EUNTTEDSTATES PATENT @FFTCE.

JOHN J. HOEY, OF PROVIDENCE, RHODE ISLAND.

CLOTH-CLAMP FOR TEXTILE 11IACHINERY.

T 0 all whom it may concern:

Be it known that 1, JOHN J. Honr, a citizen of the United States,residing at Providence, in the State of Rhode Island, have invented anew and useful Improvement in Cloth-Clamps for Textile Machinery, ofwhich the following is a specification.

The object of my improvement is to combine in a single cloth-clamp theadvantages of both the rigid arm and the releasing type of clamps,whereby the said clamp will be rendered equally adapted for all kinds offabrics; also to increase the gripping qualities of the clamp and todispense with all springs as heretofore employed, which by theirconstant pressure operate to wear a iollow place in the lower jaw, thussoon preventing the jaw from properly holding the cloth.

My improvement also provides a sensitive and quick acting controller,which also assists by its weight in forcing the upper jaw onto the clothwhen in the act of gripping it.

In the accompanying drawings: Figure 1 represents a top view of myimproved clamp for the chains of tentering machines. Fig. 2 represents aside view of the same with a portion of the frame broken away. Fig. 3represents a section taken in the line 3, 3, of Fig. 1. Fig. atrepresents a section taken in the line 8, at, of Fig. 1. Fig. 5represents a front View of the upper jaw removed from the clamp. Fig. 6represents a top View of the upper jaw as shown in Fig. 5.

In the drawings, A, represents the frame of a clamp which forms a linkof the chain by means of which the cloth is carried forward in a clothtentering machine.

B, represents the lower jaw which is integral with he frame A, and 0represents the upper jaw which is pivoted by means of the pivot pin D,to the arms a, a, of the forked releasing lever E, which latter ispivoted to the arms Z), 6, of the frame A, by means of the pivot pin F.The cross bar G, of the frame provides a stop for the downward movementof the end 0 of the said lever E, as shown in Fig. 3, and also providesan engaging medium for the rear arm (Z of the controller H, to cause theelevation of the end 6 of the said controller out of the way of thecloth as shown in Fig. 4.

The lower jaw B is provided with a plate L, in which is formed a slot f,adapted to receive the end 0 of the controller, as shown inSpecification of Letters Patent.

Patented Aug. 1., 1911.

Application filed March 19, 1910. Serial No. 550,537.

Fig. 8. The movable upper jaw C is provided with the cloth-holding edgeg, and with the rearwardly extending divided arm K, to the outer end ofwhich in the slot opening a, is pivoted the controller H, the forwardlyprojecting end 6, of which is adapted to rest upon the cloth J over theslot. f in the plate Z, as shown in Fig. 2, until the said cloth hasbeen withdrawn, and upon the said withdrawal of the cloth J from underthe end 6 of the controller, the unsupported weight of the controllerwill cause the over-balainn ing of the upper jaw upon its pivot pin D,and the consequent gripping of the cloth, as shown in Fig. 3. Now as thechain of which the frame A forms a part moves forward to the farther endof the machine the antifriclion roller 2' of the releasing lever Bengages with the releasing cam of the machine whereby the cloth will bereleased from the clamp by a slight turning movement of the aw C and thereleasing lever E about the pivot pin F, and when the clamp hasbeenreturned to the receiving end of the machine by the continued movementof the chain, then the upper jaw is to be still further raised by theupward movement of the re leasing lever E to the position shown in Fig.4: whereby the rear arm (Z of the controller H, will be brought intoengagement with the cross bar G, so as to raise the end of the saidcontroller out of the way of the incoming selvage of the cloth, and uponthe succeeding downward movement of the releasing lever E the said upperjaw will by reason of the gravitative engagement of the lugs 0, 0, withthe hubs p, 7), of the releasing lever, follow the downward movement ofthe said releasing lever until the end 6 of the controller strikes thesurface of the cloth, and then by reason of the resulting engage ment ofthe rear arm d of the controller with the lug g of the frame will causethe elevation of the cloth-holdin edge 9 of the jaw, as shown in Fig. 2tie said upper jaw being in this case caused to turn independently uponits pivot pin D. And from this position, the said upper jaw is preparedfor engagement with the surface of the cloth whenever the edge of theweb has been drawn from under the end 6 of the controller, as shown inFig. 3. And upon the engagement of the cloth holding edge 9 of the upperjaw with the cloth, the said edge will be carried forward until the lugs0, 0, bring up against the hubs p, p, which as shown in Fig. 3, form astop for such for ward movement.

It is evident that the controller may be actuated to the position shownin Fig. without the employment of the releasing lever E,-as indicated bythe dotted lines in Fig. 3, by simply pressing the jaw backward after ithas been first raised from contact with the surface of the web, as shownin Fig. 2.

The controller H is provided with a lateral projection 7a, which byengagement with the upper surface of the arm K of the upper jaw, servesto limit the downward movement of the forward end 6 of the saidcontroller.

I claim as my invention 1. In a cloth clamp for textile machinery, thecombination of a frame provided with the lower jaw and an overhangingupper portion, with a releasing lever pivoted to the said releasingupper portion of the frame, a swinging upper jaw pivoted to the saidreleasing lever, and provided with a stop which engages with the saidreleasing lever for limiting its forward movement relatively to thepivot axis of the releasing lever when the said jaw is in engagementwith the tensioned cloth.

2. In a cloth clamp for textile machinery, the combination of areleasing lever, and the swinging upper jaw provided with a back wardlyextending arm, with a controller pivoted to said arm and extending fromits pivot axis forwardly toward the back of the said jaw, and providedwith a lateral stop the proper elevation of the controller upou' theupward movement of the releasing lever for the unobstructed insertion ofthe selvage edge of the web between the jaws.

3. In a cloth clamp for textile machinery, the combination of a frameprovided with the lower jaw and an overhanging portion, with thereleasing lever pivoted to the said overhanging portion of the frame andthe swinging upper jaw pivoted to the said releasing lever, whereby thesaid upper jaw will have a swinging movement about its own pivot axis,and also a movement about the pivot axis of the releasing lever.

JOHN J. HOEY.

lVitnesses:

SocRA'rEs SoHoLrIELD, CHAS. E. SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

